Business Details
50+ Years
experience
Emergency
services
Trusted Plumbing & HVAC Solutions Since 1954
Founded in 1954 by Paul Schlosser Sr., Schlosser & Associates has built a legacy of excellence in plumbing and HVAC solutions across Delaware, Maryland, and Pennsylvania. As a family-owned business for over six decades, we have evolved from a local plumbing service to a comprehensive provider of residential, commercial, and industrial mechanical contracting. Our team of certified professionals combines technical expertise with a commitment to personalized service, ensuring every project meets the highest standards of quality and reliability. Recognized with multiple awards including the Delaware Business Times Family-Owned Business Legacy Award and the Delaware State Chamber of Commerce Superstars in Business Award, we pride ourselves on maintaining the trust of our community through integrity and exceptional craftsmanship.From emergency repairs to large-scale installations, our approach prioritizes customer satisfaction, innovative solutions, and competitive pricing. With three generations of family leadership and a dedicated workforce, we continue to uphold our founding principles while adapting to the latest industry advancements. Our comprehensive services span plumbing, heating, air conditioning, and site utility systems, making us a one-stop resource for both residential and commercial clients. By investing in ongoing training and cutting-edge technology, we ensure our team remains at the forefront of the mechanical contracting industry. Our reputation for reliability, technical proficiency, and community engagement has made us a trusted partner for thousands of customers across the Mid-Atlantic region.
Services
Plumbing Services
HVAC Installation
Heating Repairs
Air Conditioning Maintenance
Commercial HVAC
Underground Piping
Gas Line Installation
Tankless Water Heaters
Site Utility Solutions
Emergency Repairs
Details
- Year established: 1954
Highlights and features
- Family-owned since 1954 with three generations of leadership
- Comprehensive residential and commercial HVAC services available
- Emergency plumbing and heating services at regular rates
- Certified technicians with decades of combined industry experience
- Award-winning service recognized by Delaware Business Times and DSCC
What people say
Prompt and professional
Knowledgeable and courteous
Great experience
Competitive pricing
Exceptional installation
Services
Plumbing Services
Our plumbing services cover complete residential and commercial solutions including water heater installation, sewer line repairs, drain cleaning, and gas piping. We specialize in both traditional and modern plumbing systems, offering emergency repairs and preventive maintenance. Our licensed technicians use advanced diagnostic tools like video inspections to ensure accurate, long-lasting fixes for leaks, clogs, and system upgrades.
HVAC Installation
We provide full HVAC system installation for residential and commercial properties, including high-efficiency furnaces, air conditioning units, and heat pumps. Our team handles complete system replacements with energy-efficient models that reduce operating costs. We offer both standard and high-velocity duct systems suitable for historic homes, ensuring optimal temperature control and indoor air quality for every property type.
Commercial HVAC
Our commercial HVAC services include installation, maintenance, and repair of large-scale heating and cooling systems for businesses and industrial facilities. We specialize in rooftop unit installations, chilled water systems, and packaged HVAC solutions. Our experienced technicians work closely with contractors and business owners to meet project deadlines while maintaining strict compliance with industry codes and safety standards.
Emergency Repairs
We offer 24/7 emergency plumbing and HVAC repair services with no overtime charges for customers with maintenance agreements. Our rapid response team handles urgent issues like burst pipes, heating failures, and air conditioning breakdowns. Using fully equipped service vehicles and real-time dispatch systems, we provide same-day solutions to minimize property damage and restore comfort quickly.
Site Utility Solutions
Our site utility services include underground piping systems for water, sewer, and gas lines using materials like steel, copper, and PVC. We handle both residential and commercial infrastructure projects with trenchless technology options to minimize landscape disruption. Our team installs and maintains backflow preventers, geothermal loops, and industrial piping systems that meet municipal code requirements and environmental standards.
People
Steve Dennis
President
Steve Dennis has served as President of Schlosser & Associates since 2013, overseeing operations of this family-owned business. With over 30 years of industry experience, he also leads the Delaware Contractors Association as of 2025.
Garnet Schlosser Dennis
Vice President
As co-owner and Vice President, Garnet Schlosser Dennis represents the second generation of family leadership at Schlosser & Associates. She plays a key role in strategic decision-making and business development.
Zach Dennis
Operations Manager
Zach Dennis serves as Operations Manager, managing day-to-day business operations. As third-generation leadership, he ensures service quality and operational efficiency across all company departments.
Justin Dennis
Estimator
Justin Dennis works as an estimator, providing accurate project cost assessments. As part of the third-generation family team, he contributes to both residential and commercial project planning.
Chris Dennis
Estimator
Chris Dennis serves as estimator, evaluating project requirements and costs. Joining his brothers in the family business, he represents the third generation of Dennis leadership at Schlosser & Associates.
Questions
What areas do you serve?
We provide plumbing and HVAC services throughout Delaware, Maryland, and Pennsylvania.
Do you offer emergency services?
Yes, we provide 24/7 emergency plumbing and heating repairs with no overtime charges for maintenance agreement holders.
Are financing options available?
Yes, we offer financing options for major HVAC replacements and plumbing system upgrades.
What HVAC systems do you install?
We install all types including high-efficiency furnaces, air conditioners, heat pumps, and ductless systems for residential and commercial properties.
Do you handle commercial projects?
Yes, we specialize in commercial HVAC installations, plumbing systems, and site utility projects for businesses of all sizes.
How can I schedule service?
Call us at 302-738-7333 or contact through our website to schedule residential or commercial service appointments.
